#include <stdio.h>
#include <sys/stat.h>
#include <stdlib.h>    //exit() 
int main(int argc, char * argv[])
{
struct stat infobuf;   
char *filename;         
if (argc != 2) { 
       printf("Please input filename!\n"); 
       exit(-1); 
       } 
       filename = argv[1];
       if ( stat(filename, &infobuf) == -1 )
       perror(filename);
       else
       printf(" The size of %s is %d\n",filename, infobuf.st_size );
       }

